Chalk up another one for action-flick heartthrob Pierce Kingston. Just when we thought there wasn't room for another notch in his belt, Pierce was spotted in a torrid embrace with a tall, leggy brunette -- Nikki Martinelli.

Nikki is an ex-marine and professional bodyguard. And rumor has it the beauty-in-combat-boots and Playboy Pierce have made his Beverly Hills mansion their love nest. But is there more to this than meets the eye?

A close source revealed to us that Pierce has been plagued with threatening fan mail. If the rumor is true, Nikki may well be more than just a pretty face for Pierce. Don't miss the inside story for details.